• Heavy duty to allow repeated use with a fastener tool allen wrench or a ratchet without stripping
• A larger size distributes the load over a larger area to avoid pull-though
• The spring holds the button captive so that it can't be dropped underneath the car or into some hard-to-get-at area of the chassis
• A necessity for quick pit work in racing
• Use with Spring Nos. 71400, 71410, 71420, 71425 or 71430
• Ten per package